Clay product and method of making the same



Patented Jan. 30, 1934 UNITED STATES PATENT OFFICE CLAY PRODUCT AND THE METHOD OF MAKING SAME Herman Reiser, Lake Charles, La.

3 Claims.

My invention relates to the art of plastics and it particularly has for its object to provide a more serviceable and lighter clay product than heretofore for use in the manufacture of fire brick, building brick, for fire box or furnace linings, cupola linings, foundry ladle linings, roofing tile, drain tile, floor tile, and all kinds of pottery and for conditioning material for the manufacture of fire clay or any product for either fire clay or burnt clay.

Generically my invention resides in mixing with ordinary brick or potters clay burnt rice hulls, or some other similar product containing the same or similar chemicals.

I have found from experience that with a mixture of one-third of clay and two-thirds of burnt rice hulls the weight of the product has been reduced about forty (4:0) percent over a similar product made wholly of clay. I have also found that the durability of the product has been greatly increased by increasing its heat and slag resistance and adhesive qualities, and decreasing its shrinkage and brittle qualities so that the article made from the material does not break as easily as when manufactured entirely from clay. Its durability for use as fire brick, fire box or furnace linings, cupola linings, foundry ladle lining-s, etc., where it is subjected to intense heat for long periods of time is increased many times over clay that has not been mixed with burnt rice hulls, or some other product containing the same or similar chemicals.

The percentage of either material used can be changed from twenty percent of either to decreases, the weight of the product increases in proportion, likewise its susceptibility of breaking easily increases and its durability and powers of resistance and adhesiveness rapidly decrease.

Rice hulls are used as fuel by rice mills for generating power and heretofore I have always used the hulls that have been burned by the rice mills although the hulls could be taken and burned in a specially equipped furnace or treated chemically so as to obtain the same result as is obtained by burning in the power plants of rice mills.

The essential feature of the invention is the mixture of brick or potters clay with the residuum obtained by burning the hulls from rice, or other similar cereal or bag-asse from sugar cane, or any vegetable containing organic silicon.

The mixing of the clay with the burnt material may be conducted in any familiar manner, as by the use of agitating and mixing machines, so that a thorough admixture of the ingredients is obtained.

From the foregoing description, it is thought the uses and advantages of my invention will be clear to those skilled in the art to which it relates.

What I claim is: 8

1. The process of making a clay product which consists in mixing brick or potters clay with the residuum obtained by burning rice hulls.

2. The clay product which comprises an intimate mixture of brick or potters clay with burnt rice hulls.

3. The clay product which comprises an intimate mixture of brick or potters clay with burnt rice hulls in the proportion of approximately one- 35 eighty percent (80%) of the other. The differthird clay and two-thirds burnt rice hulls.

ence being that as the percentage of clay increases and the percentage of burnt rice hulls HERMAN REISER. 

